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1559m-ho Lava Hayatsu, 1985
- Type locality: Shinzo creek, Nagano city, Nagano prefecture
- Volcanic rocks
- Stratovolcano
- Pleistocene
- Thickness: ca. 20 m or thicker
------ Conformity, ~~~~~~ Unconformity, ~~~--- Local unconformity, '''/,, Interfingered, :::::: Fault, /--/-- Thrust, +__+__ Ground surface, ?--?-- Unknown
- Distribution: Shinzo creek - 1,559 m peak, Nagano city, Nagano pref.
- Nagamori et al. (2003) Geology of the Togakushi District, Quadrangle Series, Scale 1:50,000, Geological Survey of Japan, AIST, 109p. (in Japanese with English abstract 3p.)